In an episode, a girl is wearing a maid dress

Mild innuendo. Will most likely go over kids heads.

As a part of the Yu-Gi-Oh! series, it has quite a bit of violence and arguing. No blood is shown when monsters are destroyed, but some characters have scratches and bruises on them from duels.

In the English Dub, there is no profanity whatsoever. The worse it gets is "heck" or "dang"

English dub has absolutely none.

There's monsters, fighting, and arguing throughout. The monsters and cards might frighten some people, especially in one particular episode in season 2.

Dub: Jaden duels with people called "Shadow Riders", who's appearances might frighten some.